Hero image adjusting/revealing based upon browser width

Hi -

I'm not really a CSS guy (just know enough to be dangerous) - and I've had a project land in my lap where I need to design a banner/hero image function that reveals/adjusts based upon browser width.

Is there a JQuery/CSS function or something similar (or some guidance you can provide) on how to accomplish this?

A good example would be on http://www.silveroak.com

Take a look at the header image.  The center point remains constant - revealing more/less of the image as you expand/contract the browser window.  That's the effect I'm trying to accomplish.  :)

Any suggestions?

Thanks ahead of time!
LVL 2
erzoolanderAsked:
Who is Participating?
 
Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
I think I broke jsbin...that link did not work for a bit. (which is why we delete link only answers)
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
That does not look like it really adjusts.  Check out the bootstrap framework which is a responsive framework of css and js/jquery.   They use the term jumbotron http://getbootstrap.com/examples/jumbotron-narrow/

Otherwise, you can either use media queries or a width as a percentage.
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erzoolanderAuthor Commented:
Well, the third image (the one with the trees) is the one that illustrates the concept best.  When you adjust the browser horizontal width - the center point of the image remains constant/aligned with the div beneath it - while cropping/revealing equally from left and right.
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
Like this? http://jsbin.com/yokadiwo/1/

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
  <style>
    .hero{
      background-image: url('http://www.silveroak.com/content/images/home/home_banner3_1.jpg'); 
      background-repeat:no-repeat;
      background-attachment:fixed;
      background-position:center; 
      background-size:cover;
      height: 300px;
      text-align:center;
      padding-top:50px;
      padding-left:50px;
      color:red;
    }
    
    </style>
</head>
<body>
  <div class="container">
  <div class="hero">I am hero</div>
  </div>  
</body>
</html>

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erzoolanderAuthor Commented:
Perfect - thank you!
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